Firmware update for the camera body can be carried out using only the camera body.
To update the lens firmware, both camera body and lens are required.
The update procedure varies depending on the combination of the camera body and the lens. The following table describes the update procedure in each combination.

You can add new functions and operability improvements by updating your E-M1 Mark II , E-M1 and E-M5 Mark II to the latest firmware version. Please update your camera to use these functions.
For instructions regarding the added functions, refer to the revised instruction manual. Download Manuals : OLYMPUS OM-D / PEN series

*2

For updating the camera to the latest version, you are required to update the camera twice.
If the current version is 1.0 or 1.1:
First, update the camera to version 1.3, and then update to the latest version.
If the current version is 1.2:
First, update the camera to version 1.4, and then update to the latest version.

Before updating the firmware, install the Digital Camera Updater from the CD-ROM that is packaged with the E-M5 or download the latest version of the Digital Camera Updater (Win: ver. 1.03 / Mac: ver. 1.04).
You cannot update the firmware if updating with the earlier version of the Digital Camera Updater.OLYMPUS Digital Camera Updater

You can add new functions and operability improvements by updating your PEN-F to the latest firmware version. Please update your camera to use these functions.
For instructions regarding the added functions, refer to the revised instruction manual. Download Manuals : OLYMPUS OM-D / PEN series

*4

Do not disconnect the camera from the computer until the LCD on the camera displays OK. The firmware update is not complete until the camera displays OK. Disconnecting the camera before the firmware completes may render the camera inoperable.

The firmware for M.ZUIKO DIGITAL ED 14-42mm F3.5-5.6 L differs from the one for M.ZUIKO DIGITAL ED 14-42mm F3.5-5.6.
The latest version for M.ZUIKO DIGITAL ED 14-42mm F3.5-5.6 L is version 1.0. Firmware update is not required.

If the firmware version of your 14-150mm F/3.5-5.8 Di III [Model C001] lens is 1.0, you are required to update the lens twice.
First, update the firmware of the lens to version 1.1, and then update to the latest version 1.3.